Since e-juice comes in 0, 6, 8,12, etc., etc., I would like to know if anybody knows what those number really mean. I was on some site the other day (I can't remember which one) and the listed their juices as 0.6, 0.8, 1.2, etc., etc. What ARE those numbers really? I know the ultra lights that I used to smoke were about 1mg of nicotine per cig. How does that translate to vaping and e-juice as far as the milligrams are concerned. It's driving me crazy!!